Reproductive Biology of Cero, Scomberomorus regalis, from the Coastal Waters of South Florida

Cero, Scomberomorus regalis, were collected off south Florida during 1980-81 to determine their reproductive biology. Spawning of cero occurs in coastal waters throughout most of the year with a peak in May. Males attain maturity at about 350 mm FL and females at about 380 mm FL. Fecundity estimates from 20 late maturing or ripe females ranged from 161,000 ova for a 380 mm fish weighing 558 g to 2,234,000 ova for a 800 mm fish weighing 4,944 g. Total weight better indicated fecundity than did fork length. The relationship between fecundity and total weight was expressed by the least square equation F = -1.079 x 10-1 + (4.342 x 10-4) TW. The mean number of ova per gram of fish weight was 362

Age-Size Structure of Red Grouper, (Epinephelus morlo), from the Eastern Gulf of Mexico

Sagittal otoliths from 534 red grouper, Eplnephelus morlo, were collected from recreational and commercial fisheries of the eastern Gulf of Mexico in 1979-1981 (236 fish) and 1991-1992 (298 fish). Age estimations for the two collections were made In 1991-1992 from the surface and transverse sections of these otoliths. Also, estimates of back-calculated size at age (using the final annulus present at time of capture following Lea\u27s (1910) method were made for these collections. Red grouper were larger in size at capture at age and back-calculated size at age in 1991-1992 than in 1979-1981. The respective von Bertalanffy growth parameters were: 1979·81 L∞ = 78.9, K = 0.1778, t0 = 0.82591991·92 L∞ = 92.6, K = 0.1588, t0 = 0.9323 where L∞ Is mean maximum attainable total length In centimeters, K Is growth coefficient, and t0 Is hypothetical age in years at which fish would have zero length

Management of Softwrare Product Development, Innovation and Adaptability

This inductive study develops a model of innovation and adaptability in software product development. It is based on a case study of a company that is transitioning from a custom development approach to a product-based solution. The emergent model represents a synthesis of the case study findings and the enfolding literature from traditional product development and software development. The goal of the emergent software product development model is to guide organizations in their selection of development processes

Controls in Flexible Software Development

Control and flexibility may appear an unlikely pair. However, we propose that effective flexible software development processes must still provide clear control mechanisms to manage the progress and quality of the resulting software products. This paper presents a conceptual study to understand the types of control found in flexible software development processes, termed controlled-flexible approaches. Control theory is used as a lens to study the control mechanisms found in plan-driven and flexible processes. We extend current thinking to include emergent outcome controls and clan controls for team coordination in our taxonomy of control mechanisms. Several popular flexible processes are analyzed for control mechanisms. We conclude with a brief discussion of future research directions

Agile Methods: Fast-Paced, but How Fast?

What are the roles of time and time pressures in design and performance of agile processes for software development? How do we plan our rapid development activities given the constraints of due dates? What does it mean to be on ‘internet time’? Agile methods are meant to be fast-paced, but are they fast in an effective way? How do time-pressures influence the productivity of a project team and how do they impact the motivations of developers? This paper considers the time issues in agile approaches to managing software projects and posits research propositions to guide further study of this area

Developing a Predictive Metric to Assess School Viability

This article examines a wide range of parish school indicators that can be used to predict long-term viability